Fees shall be charged and collected by the commission pursuant to its rules and regulations for the following:
(a) Certificates of purchase or duplicates thereof,
(b) Patents and certified copies of records thereof,
(c) For certifying a contested case to superior court,
(d) For certifying copies of papers,
(e) Such other fees as are allowed by law.
(Amended by Stats. 1968, Ch. 981.)